Depending on the processed material from each drill must be properly sharpened. To verify the correct angle will help a specially prepared square plate of copper or aluminium with a thickness of 1 mm.
To become operational protractor enough to cut it cut, as shown in the picture: a large cutout at an angle of 120 degrees, the other half is 60 degrees and the surviving corner of a square is 90.
Recommend to read
YOUR WORKPLACE
The scientific organization of labor, rational layout and equipping of workplaces is an important reserve for increasing productivity and improving product quality. Not casually the...
FROM PROTOTYPE TO COPY
First of all, let me ask you a question: can a student-constructor of ship models do with their hands, without the help of a group leader, to create a good copy of a military ship? Most...
